At the main menu, select the "Extras" option, then choose the "Cheats" selection. Enter one of the following codes to activate the corresponding cheat function. If you entered the code correctly, a message will appear.

Body Surf ability

Enter Right(2), Left, Down, Up(3), Down as a code to unlock the Body Surf ability.

New Game+ mode

Successfully complete Story mode. You can now replay Story mode with all powers and upgrades previously unlocked. Note: New Game+ mode is only unlocked for the difficulty that you have completed (and any lower difficulty).

Starting a New Game+ on a different difficulty

After unlocking the New Game+ option for the Easy or Normal difficulty, it is possible to start a New Game+ on a difficulty that it has not yet been unlocked for. To do this, under New Game+, select Easy+ or Normal+, whichever is applicable. Instead of saving as prompted, press B to back out of the selection. Then, select a difficulty for which the New Game+ has not yet been unlocked. Save the data when prompted to begin the game. You will now begin the game with New Game+ status, without having unlocked it for the corresponding difficulty.

Platinum events

Get a "Gold" rank in all events to unlock the Platinum events. Note: This may also unlock some Radical events.

Hard mode

Successfully complete the game on the Normal difficulty to unlock the Hard difficulty.

Easy experience

An easy way to get experience points is to get a helicopter, preferably without alarm. Go to any Infected area, and search for water towers containing Hunters. These are easily found by going to the area where the crows are circling. This indicates where an Infected water tower is located. Lock on to it, and blow it up with a rocket. It should only take one rocket with a direct hit. You will get 8,000 experience points per water tower. With 200 rockets in an attack helicopter, you can get 1,600,000 total experience points. Then using the machine gun, you can destroy forty more water towers. You can then use the remaining homing missiles to blow up a hive for more points. Get another helicopter, and repeat the process. The water towers will respawn after a short period of time.

Play the mission where you have to steal a helicopter to find the right Hunter. You are told to go fly over the Infected area and scan the Infected water towers for a suitable enemy type. Instead of doing that, fly to the Infected area, and start shooting the Infected water towers that are around all Infected areas. You get approximately 8,000 experience points for each. Shoot 25 of them to get the "Misconception" achievement for destroying the Infected water towers without them hatching. As long as you properly hijack the helicopter and no one suspects you as an enemy, no one will attack you while you do this. One water tower requires one missile. Make sure to steady it so you do not waste missiles. One flythrough with the helicopter can get you 1,192,000 experience points, assuming you can find one water tower per missile. You can get even more than that if you use your machine gun. After getting about 500,000 experience points, crash the helicopter, and repeat the process again from the checkpoint.

Note: This trick requires the ability to hijack helicopters and have Infected Vision, obtained later in the game. Hijack a helicopter, then activate Infected Vision. Look for the bright orange water towers scattered throughout the city, primarily in the Infected areas. Shoot them with the helicopter's weapons. For each water tower destroyed, you will get 10,000 experience points, which are important this far in the game. Note: Water towers respawn continuously for unlimited experience points.

Finding Infected water towers

Squawking crows usually circle the Infected water towers, making them easier to find.

Super gliding

Jump into the air and glide. When you start descending, use Air Dash and press A(2) to glide again. You can repeat this until you run out of Air Dash (two maximum) for a total combo of three glides and two Air Dashes. You can glide for three times as long with this trick.

Better landings

When jumping, use a dash just before landing. If timed correctly and if the drop was not too great, you should land at near full speed.

Helicopter jumping

This trick requires the ability to hijack helicopters and Jump Kick so that you can fly towards the helicopter. You can also use the Whipfist's Grab upgrade to latch onto an enemy helicopter. Double Jump can also be useful. To start, jump up, and Jump Kick or use the Whipfist Grab to latch onto the first helicopter. Do the button event to kill the pilot. Fly up as high as possible, and look for the next target. Make sure to use the Lock On ability. Jump out of the current helicopter, and Jump Kick towards the next helicopter. You can keep doing this as long as there are helicopters. If you fall, quickly use the Whipfist Grab. Note: This can be very challenging, but if done successfully you can attack numerous helicopters without ever touching the ground.

Defeating the Time Square Boss

This Boss battle may seem hard, but it can actually be easy. Long before the battle, purchase all upgrades that allow you to do +3 Devastator attacks, upon max health. It is also recommended you get all upgrades possible through the "Consume" option. The Boss is massive. Notice that under her health bar are other bars. These are the Boss' stabilizers, making her vulnerable only after you have severed them. At the beginning of the battle she will do a scream attack. Be careful. Scale up a building or whatever else you can. It is very easy to avoid. You will also have Hunters and Infected chasing you. Use the full body armor and claws/blade. Max out your health by running around and consuming. It is easy, and the only issues you might have are Hunters, but with the upgrades one hunter can nearly boost your health to max, allowing for maximum Devastator attacks. This is one of the first Devastator attacks you learn. Scale a building, boost over to her, fall, and initiate the attack. You will quickly see the Boss' stabilizers are being damaged. Note: Every round the stabilizers' health will increase, meaning that you have to follow the tactics in the same way, and it will just take slightly longer. Strike her with the Devastator. You should have a chance for more, unless she does multiple attacks (green orbs that track you, spitting concrete, and screaming). The armor reduces the amount of damage inflicted, allowing you enough time in-between attacks to initiate the Devastator again. Once the stabilizers are destroyed, she will fall, and you can attack normally. She will then retreat (leaving you plenty of red health orbs to consume) before shooting out of the ground again, with more stabilizer health and "backup". Ignore the backup. This tactic works nicely, but if you get low on health, run away from her view, and keep consuming. After she falls a total of three times, you will have defeated her.

Defeating the final Boss

Quickly switch to Armor and Blade after the cutscene ends. Having Infected Vision will help. Stay away from the Boss until he starts to jump. After he lands, attack him with an Air Blade Slash. He will become stunned after a few good hits. Grab him and repeatedly punch. If you are taken down to critical level, use a Devastator move to stun him.

Experience points for Orbs

The experience points awarded for each Orb picked up is based on how many Orbs have already been collected.

Play the mission where you lead the Leader Hunter to Ragland. Successfully complete your objectives without being noticed. You will be instructed to lure the Hunter. Look at the map. It is mainly infected zones with two blue military zones at the far east and west. Notice the unclaimed area directly up the middle. Keep in this area to avoid alerting the military and get the "Half-Truths" achievement.

Easy "Misconception" achievement

After you get your powers back (when Ragland helps you), it will be easy to find infected water towers. Lock on to one, then go to the corresponding building. Get on the roof, and use the flying kick attack to do a lot of damage. Then, quickly follow up with a combo to destroy it. Note: The "claws" powers will make this easier.

Easy "Speed Bumps" and "The Butcher" achievements

After you have the ability to hijack a tank, drive one into a red zone. You should find a lot of fleeing civilians (normal and infected). Drive on the sidewalk to run them down and get "The Butcher" achievement. You can also unlock the "Speed Bumps" achievement after running over 500 people in a single tank.

Easy "The Cleaner" achievement

You can destroy ten Hives easily because the military softens them up by the time you get there. Get a tank and destroy them to get "The Cleaner" achievement.

Achievements

Accomplish the indicated achievement to get the corresponding number of Gamerscore points: